Side-by-side comparison of pricing, 12 benchmarks, and generation speed.
| Metric | GPT-4.5 (Preview) | Llama 3.1 Instruct 405B |
|---|---|---|
| Input ($/M tokens) | $0 | $2.75 |
| Output ($/M tokens) | $0 | $6.5 |
Data from Artificial Analysis API — 12 benchmarks
GPT-4.5 (Preview) is cheaper overall. Its blended price (3:1 input/output ratio) is $0.00/M tokens vs $3.69/M for Llama 3.1 Instruct 405B.
Llama 3.1 Instruct 405B wins 11 out of 12 benchmarks compared to 1 for GPT-4.5 (Preview). See the detailed benchmark chart above for per-category results.
Llama 3.1 Instruct 405B generates tokens faster at 31 tok/s vs 0 tok/s. GPT-4.5 (Preview) also has lower time-to-first-token (0.00s vs 0.47s).
Choose based on your priorities: GPT-4.5 (Preview) for lower cost, Llama 3.1 Instruct 405B for stronger benchmark performance, and Llama 3.1 Instruct 405B for faster generation. For latency-sensitive apps, check the TTFT comparison above.